Zobrazeno 1 - 10
of 74
pro vyhledávání: '"U. Häcker"'
Publikováno v:
Scopus-Elsevier
The dynamics of the incommensurate (IC) modulation is investigated for several IC systems near the transition to the normal high temperature phase by means of quadrupolar perturbed NMR spectra using first-order effects. For the special case of the IC
Publikováno v:
Zeitschrift für Physik B Condensed Matter. 100:441-446
The nuclear spin-lattice relaxation rate in incommensurate systems is analysed for the the so-called soliton limit which often can be applied near the transition to a subsequent commensurate phase. Previous calculations are corrected by taking into a
Publikováno v:
Physical Review Letters. 78:2152-2155
Publikováno v:
EMBO Journal
Europe PubMed Central
Europe PubMed Central
The fork head (fkh) domain defines the DNA-binding region of a family of transcription factors which has been implicated in regulating cell fate decisions across species lines. We have cloned and molecularly characterized the crocodile (croc) gene wh
Publikováno v:
Europhysics Letters (EPL). 31:213-218
Order parameter (OP) fluctuations are studied in the normal (N) phase of the incommensurately modulated (IC) system Rb2ZnCl4 by measuring the 87Rb NMR spin-lattice relaxation time T1. The results are analysed on the basis of dynamical-scaling laws. S
Publikováno v:
Zeitschrift für Naturforschung A. 50:368-372
2H and 14N NMR spin-lattice relaxation rates were measured in the structurally incommensurately (IC) modulated phases of deuterated and undeuterated betaine calciumchloride dihydrate, respectively. The results are related to the elementary excitation
Publikováno v:
Solid State Communications. 94:275-278
Quadrupolar perturbed 35Cl NMR spectra are measured in the high-temperature normal (N) phase and in the low-temperature (LT) phase of betaine calciumchloride dihydrate (BCCD) single crystals. The electric field gradient (EFG) tensors at the chlorine
Publikováno v:
Physical Review B. 50:16192-16204
A general formalism is developed for describing nuclear-spin-lattice relaxation for quadrupolar perturbed nuclear magnetic resonance (NMR) in structurally incommensurately (IC) modulated crystals in terms of the elementary excitations of these system
Publikováno v:
physica status solidi (b). 185:257-264
35Cl and 81Br quadrupolar perturbed NMR measurements in single crystals of tris-sarcosine calcium bromide (TSCB) and tris-sarcosine calcium chloride (TSCC) are used to study molecular motions and the dynamical critical behaviour near the ferroelectri
Publikováno v:
physica status solidi (b). 184:205-214
The static and dynamic behaviour of the deuterated crystal water molecules in the normal (N) phase of betaine calciumchloride dihydrate (BCCD) single crystals is investigated by means of quadrupolar perturbed 2H NMR. The temperature dependence both o